24416 version 1
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Demonstrate knowledge of wheel tractor braking systems
Level
3
Credits
3
Purpose
This theory-based unit standard is for people in the agricultural equipment
repair industry. People credited with this unit standard are able to
demonstrate knowledge of: wheel tractor brake systems, servicing
procedures, and fault diagnosis; wheel tractor hand brake and emergency
brake systems, fault diagnosis, and repair procedures; and wheel tractor
auxiliary braking systems.
Subfield
Motor Industry
Domain
Vehicle Braking Systems
Status
Registered
Status date
25 January 2008
Date version published
25 January 2008
Planned review date
31 December 2012
Entry information
Open.
Replacement information
This unit standard and unit standard 24417 replaced unit
standard 5437.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
NZ Motor Industry Training Organisation (Incorporated)
Accreditation and Moderation Action Plan (AMAP) reference
0014
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
Legislation relevant to this unit standard includes but is not limited to – Land
Transport Rules: Light-vehicle Brakes 2002, Rule 32014; Vehicle Repair 1998, Rule
34001.
2
Land Transport Rules are produced for the Minister of Transport by Land Transport
New Zealand. These rules are available online at
http://www.landtransport.govt.nz/rules/.
 New Zealand Qualifications Authority 2016
24416 version 1
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3
Definition
Service information may include but is not limited to – technical information of a
vehicle, machine, or product detailing operation; installation and servicing
procedures; manufacturer instructions and specifications; technical terms and
descriptions; and detailed illustrations. This can be accessed in hard copy or
electronic format and is normally sourced from the manufacturer.
Elements and performance criteria
Element 1
Demonstrate knowledge of wheel tractor brake systems, servicing procedures, and fault
diagnosis.
Range
includes but is not limited to – outboard slow axle brakes, high speed axle shaft
brakes (dry), high speed shaft axle brakes (wet), high speed transmission
brakes (dry).
Performance criteria
1.1
Safety requirements relating to workshop and field work are identified in
accordance with legislative requirements.
Range
1.2
Construction of tractor braking systems is described in accordance with service
information.
Range
1.3
personal safety, safe jacking procedure and jacking points, lifting
equipment, slings and chains.
includes but are not limited to – features, identification of parts,
layout of parts.
Operation of tractor braking systems is described in accordance with service
information.
Range
includes but is not limited to – braking action (combination,
independent).
1.4
Servicing and diagnostic procedures of wheel tractor braking systems are
described in accordance with service information.
1.5
Brake lining materials used for tractor braking systems are described in
accordance with service information.
Range
includes but is not limited to – asbestos and non-asbestos linings,
bronze and steel plate discs.
 New Zealand Qualifications Authority 2016
24416 version 1
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1.6
Wet brake lubrication requirements are identified in accordance with service
information.
Range
includes but is not limited to – manufacturer specified oils, oil
company specified oils, compatibility and interchangeability of oils,
oil requirements.
Element 2
Demonstrate knowledge of wheel tractor hand brake and emergency brake systems, fault
diagnosis, and repair procedures.
Range
includes but is not limited to – high speed transmission shaft, transmission disc,
main overriding system.
Performance criteria
2.1
Construction of tractor hand brake and emergency braking systems are
described in accordance with service information.
Range
includes but is not limited to – features, identification of parts,
layout of parts.
2.2
Braking action of a tractor wheel emergency braking system is described in
accordance with service information.
2.3
Diagnostic procedures of tractor hand brake and emergency braking systems
are described in accordance with service information.
2.4
Repair procedures of tractor hand brake and emergency braking systems are
described in accordance with service information.
Element 3
Demonstrate knowledge of wheel tractor auxiliary braking systems.
Range
overriding drawbar brakes, operator controlled brakes.
Performance criteria
3.1
Construction of tractor auxiliary braking systems is described in accordance with
service information.
Range
includes but is not limited to – features, identification of parts,
layout of parts.
3.2
Braking action and operation of tractor auxiliary braking systems are described
in accordance with service information.
3.3
Repair procedures of tractor hand brake and emergency braking systems are
described in accordance with service information.
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24416 version 1
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Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact the NZ Motor Industry Training Organisation (Incorporated)
info@mito.org.nz if you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016